org.jfree.data.general

Class DefaultValueDataset

public class DefaultValueDataset extends AbstractDataset implements ValueDataset, Cloneable, PublicCloneable, Serializable

A dataset that stores a single value (that is possibly null). This class provides a default implementation of the ValueDataset interface.

Constructor Summary
	DefaultValueDataset() Constructs a new dataset, initially empty.
	DefaultValueDataset(double value) Creates a new dataset with the specified value.
	DefaultValueDataset(Number value) Creates a new dataset with the specified value.

Method Summary
boolean	equals(Object obj) Tests this dataset for equality with an arbitrary object.
Number	getValue() Returns the value.
int	hashCode() Returns a hash code.
void	setValue(Number value) Sets the value and sends a DatasetChangeEvent to all registered listeners.

Constructor Detail

DefaultValueDataset

public DefaultValueDataset()

Constructs a new dataset, initially empty.

DefaultValueDataset

public DefaultValueDataset(double value)

Creates a new dataset with the specified value.

Parameters: value the value.

DefaultValueDataset

public DefaultValueDataset(Number value)

Creates a new dataset with the specified value.

Parameters: value the initial value (null permitted).

Method Detail

equals

public boolean equals(Object obj)

Tests this dataset for equality with an arbitrary object.

Parameters: obj the object (null permitted).

Returns: A boolean.

getValue

public Number getValue()

Returns the value.

Returns: The value (possibly null).

hashCode

public int hashCode()

Returns a hash code.

Returns: A hash code.

setValue

public void setValue(Number value)

Sets the value and sends a DatasetChangeEvent to all registered listeners.

Parameters: value the new value (null permitted).

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